Houston Police Chief Art Acevedo said a senior officer shot while serving a narcotics warrant at a home later passed a note to him at the hospital saying he had to jump in there when other officers were down.

The 54-year-old officer and 32-year veteran of the force was one of four officers shot during the incident Monday at the house at 7800 Harding in southeast Houston.

A fifth officer suffered a knee injury, which required surgery.

Acevedo released more information at a press conference Tuesday morning about how the shooting unfolded.

Shortly before 5 p.m., narcotics officers arrived at the house after receiving a tip from a neighbor that the suspects were dealing drugs, including black tar heroin.

When the officers entered the home, they immediately came under fire, Acevedo said.

All of the officers involved are undercover narcotics officers. Their names will not be released.

Acevedo said the first officer who went through the door had a shotgun and was immediately charged by a large pit bull.

The officer shot the dog and killed it.

At the same time, the first suspect, identified as 59-year-old Dennis Tuttle, came from around the back and opened fire with a .357 Magnum revolver, hitting the first officer in the shoulder.

That's when the second suspect, Tuttle's wife 58-year-old Rhogena Nicholas, reached over the officer and started making a move for his shotgun.

A 50-year-old sergeant and 25-year veteran of the force, who was shot in the face, is likely to be released from the hospital Tuesday.

A second 50-year-old sergeant, who injured his knee and required surgery, is recovering and will likely be sent home this week, said Dr. Michele McNutt, Chief of Trauma at Memorial Hermann & UT Health.

He is a 27-year veteran of the force.

A 33-year-old officer, who was shot in the shoulder, was released from the hospital on Monday. He is a 10-year veteran of the force.

A fifth officer, who was also shot in the face, underwent surgery Monday night. He'll need multiple surgeries in the future, Dr. McNutt said.